Steam-engine.



L. SWABB.

STEAM ENGINE.

APPLICATION FILED APR.22.1915.

1,176,788. Patented Mar. :28, 1910.

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GEORGE swans, or mm, mimmvema, assrelvon TO: meme. LOCOMOTIVE WORKS, OFERIE, M. he

To all whom it may concern:

Be it known that I, Gnoncn L. SWABB, a citizen of the United States, andresiding at Erie, in the county of Erie and State of Pennsylvania, haveinvented-new and useful.

fully described and pointed out in the claims. v

More particularly the invention relates .to steam engines used with whatis commonly known as geared or logging locomotives. With some of theselocomotives and to which this engine is adapted the engine shaft extendslongitudinally and centrally of the locomotive and the engine cylindersare set at a right angle to each other and operateon a common crank, theengines being ordinarily set at 45 from a vertical position and extendeach side of the locomotive boiler. With engines of this type themounting and the carrying of the valve have presented some diflicultyand the purpose of this invention is to improve the valve gear and itsmounting.

The invention is illustrated in the accompanying drawings as followsFigure 1 shows a plan view of the engine, Fig. 2 a side elevation of theengine. Fig. 3 a section on the line 33 in Figs. 1 and 2. Fig. 4 anelevation of the controlling levers.

1 marks the engine supports which in this instance are the slde framesof a locomotive,

and 2 the engine cylinders. These are carried by a frame 3 formed in twohalves bolted together, the separation being on a vertical plane throughthe center. The cylinders themselves form a part of the frame. The valvegear is mounted on a frame 4. This frame has the vertical and horizontalsecuring plates 5 and 6 respectivel which extend over the joint in themain rame of the engine and are secured to the main frame of the engineby studs or bolts 7. The frame 4 has the forwardly extending portion 8from which depend the bearings 9 and 10 for the operating rod 11. Theoperating lever 12 is fixed on the rod 11 between the bearings 9 and 10by means'of set screws 13. The lever is provided at its end with a ball14 on which a link 15 is jointed, the opposite end of the link operatingon Specification of Letters Patent.

Application filed April 22, 1915. serial Bio. 88,054.

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Patented Mar. 28, we.

a ball 16 carried by a lever 17. The lever 17 is carried by a rock shaft18 (see dotted lines Flg. 4), the rock shaft being journaled 1n 8.bearing 19 supported by the frame 1. The rock lever 20 extends upwardlyfrom the shaft 18 and is connected by a link 21 with the controllinglever as 22 of the locomotive. The lever 22 is journaled on the pm 22and the pin 22 is secured on the frame 1.

Thetumbling lever 23 is fixed on the'end Pins 24 extend of the operatingrod 11. through the arms of the tumbling lever 23 and the link hangers25 are journaled on these pins, the hangers having the forked ends 26 sothat a double bearing is provided for each link hanger. The pins 24 arefixed in the tumbling levers by means of the set screws 27. Pins 28extend through the swinging ends of the link hangers 25 and into thestraps 29, these straps being secured to the links 30. Eccentrics 31 and32 are fixed on the engine shaft 3. provided with the straps 33 and 34respectively and are connected to the links by the rods 35, 36,37 and38, the eccentrics operating the links in the common and wellknownmanner. The link blocks 39 are slidingly mounted in the links as isusual. Pins 40 extend into these blocks and through the forked ends 41of the valve rod rocker arms 42. The valve rod bearings 43 are arrangedon the pins 40 between the sides of the forked ends 41. Valve rods 44are secured to these bearings. The valve rod rocker arms 42 have theforked ends 45 which are journaled on the pins 46. The pins 46 are fixedin arms 48 by means of set screws 49. The arms 48 extend from a post 47on the frame 4.

It will be observed that the valve gear is mounted on the frame 4 andcan be entirely assembled on this frame and then put in place bysecuring the frame 4 to the engine frame. It will also be observed thatthe link hangers, valve rod supports, and operating rod have doublebearings so. that they are readily carried notwithstanding the severeshock and jar to which they are subjected.

What I claim as new is 1. In a steam engine, the combination of anengine frame; two engine cylinders carried by the frame set at rightangles to each other and 45 from a vertical plane;

They are prising an operating lever; an operating rod; a tumbling lever;link hangers; links;

link blocks; valve rods; and valve rod rocker arms; and a valve gearframe on which the valve gear is mounted detachably secured to-theengine frame.

2. In a steam engine, thecombination of an engine frame; two enginecylinders carried by the frame set at rlght angles to each other and 45from a vertlcal plane; a common engine'shaft; a valve gear comprising anoperating lever; an operating rod; a tumbling lever; link hangers;links; link blocks; valve rods; and valve rod rocker arms; and a valvegear frame on which the valve gear is mounted detachably secured to theframe, said valve gear frame comprising double bearings for theoperating rod, the operating lever being secured to the op erating rodbetween said bearings.

3. In a steam engine, the combination of an engine frame; two enginecylinders carried by the frame set at right angles to each other and 45from a'vertical plane; a common engine shaft; a valve gear comprising anoperating lever; an operating rod; a tumbling lever; link hangers havingforked ends forming a double bearing on the tumbling lever; linkscarried by the link hangers; link blocks; valve rods; and valve rodrocker arms; and a valve gear frame on which the valve gear is mounteddetachably secured to the engine frame.

4. In a steam engine, the combination of an engine frame; two enginecylinders carried by the frame set at right angles to each other and 45from a vertical plane; a common engine shaft; a valve gear comprising anoperating lever; an operating rod; a tumbling lever; link hangers;links; link blocks; valve rods; valve rod rocker arms, said valve rodrocker arms having forked ends; and valve rod bearings arranged betweenthe free forked end, said forked end being pivotally connected with thelink block; and a valve gear frame on which the valve gear is mounteddetachably secured to the engine frame, said valve gear frame having apost and pins extending therefrom through the forked ends of the by theframe set at right angles to each other and 45 from a vertical p ane; acommon engine shaft; a valve gear comprlsmg an operating lever; anoperating rod; a tumbling lever; link hangers; links; link blocks; valverods; and valve rod rocker arms; and a valve gear frame on which thevalve gear is detachably secured to the engine frame,

said valve gear frame having two bearings for the operating rod in whichthe operating rod is journaled, the operating lever being arrangedbetween said'bearings and the tumbling lever arranged without saidbearmgs.

- 6. In a steam engine, the combination of an engine frame; two enginecylinders carried by the frame set at right angles to each other and 45from a vertical plane; a common engine shaft; a valve gear comprising anoperating lever; an operating rod on which the lever is mounted; atumbling lever fixed on the operating rod; link hangers having a forkedend forming double bearings with the tumbling lever; links to which thelink hangers are secured; link blocks in the links; a valve rod; valverod bearings on the valve rod; and valve rod rocker arms having forkedends, the valve rod bearings being arranged in one forked end and thelink blocks being pivotally secured thereon; and a valve gear frame onwhich the valve gear is detachably secured to the engine frame, saidvalve gear frame havlng two bearings in which the operating rod isOurnaIed, the operating lever being arranged between the bearings; armsextending from the frame; and carrying pins exwitnesses.

GEORGE L. SWABB. Witnesses H. R. JEFFS, D. E. SHREVE.

